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Silicone O-Ring Seal Mold

Silicone O-Ring Seal Mold is specially designed for manufacturing high-precision liquid silicone rubber (LSR) o-ring seals and sealing components for industrial, automotive, medical, electronic, and household applications. Using advanced liquid injection molding (LIM) technology, the mold delivers excellent dimensional accuracy, stable sealing performance, and efficient large-scale production. Silicone o-rings are widely used because of their superior elasticity, temperature resistance, chemical
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  • Product Detail
Mold information
Mold core materialS136H
Mold base materialS50C
Number of cavity388
Runner systemCold Runner
Number of cold nozzle4
Product nameO-ring seals
Machine usedTYM-L7078

Details

This high-precision silicone o-ring seal mold is designed for producing large-volume o-ring seals with excellent consistency and sealing performance. Featuring a 388-cavity cold runner system and a vertical double-lower-mold structure, it is optimized for liquid injection molding (LIM) of  industrial-grade silicone materials. 

The mold provides stable production, long service life, and high output efficiency, making it ideal for manufacturers requiring large-scale silicone sealing components.

The silicone o ring seal mold delivers superior accuracy, durability, and performance in liquid injection molding. Each o-ring seal produced maintains strict dimensional tolerances and excellent elasticity, ensuring reliable sealing performance in applications such as medical devices, automotive components, electronics, and household appliances.

With optimized mold design and advanced processing, this tool guarantees cost-effective mass production of silicone o-ring seals, while reducing material waste and ensuring product reliability.

 

Mold Design & Technology

Cold Runner System for Material Efficiency
The cold runner ensures precise silicone feeding and minimal waste, lowering material costs while maintaining high part quality.

Multi-Cavity Layout for High Productivity
With 388 cavities, the mold is engineered for ultra-high output, significantly reducing unit cost in mass production of o-ring seals.

Vertical Double-Lower-Mold Design
The vertical injection structure with dual lower molds allows simultaneous part removal and injection, minimizing downtime and boosting overall efficiency.

Precision Machining for Tight Tolerances
CNC and EDM processing ensure high dimensional accuracy, delivering consistent silicone o-ring seal quality across all cavities.

Efficient Cooling System
Strategically designed cooling channels shorten cycle times, ensuring faster production without compromising surface finish or durability.

Durable Mold Steel Construction
Built with high-strength tool steel, the mold withstands continuous production under high pressure, ensuring long-term stability and durability.

 

FAQ

Q1: What applications are silicone o-ring seals used for?
A: They are widely applied in medical devices, automotive sealing parts, household appliances, fluid systems, and industrial equipment.

Q2: What material is recommended for this mold?
A: Medical-grade liquid silicone rubber (LSR) or industrial-grade silicone, processed via liquid injection molding.

Q3: What are the advantages of liquid injection molding for o-ring seals?
A: LIM ensures precise dosage, excellent material flow, high production efficiency, and consistent quality across thousands of silicone o-ring seals.

Q4: Can the mold be customized for different sizes of o-ring seals?
A: Yes, cavity number, dimensions, and runner design can be tailored according to customer requirements.

Q5: What is the expected lifespan of the mold?
A: With proper maintenance, the silicone o-ring seal mold can sustain long-term, high-volume production with excellent stability.